SEMI-CONDUCTOR DEVICES - AN ELBIT SYSTEMS - RAFAEL PARTNERSHIP;PHILIP KLIPSTEIN
发明人:
PHILIP KLIPSTEIN
申请号：
IL24679616
公开号：
IL246796A
申请日:
2016.07.14
申请国别(地区):
IL
年份:
2020
代理人:
摘要：
Photodetectors and methods for dual band photo detection are disclosed. According some embodiments the photo detector includes a stack of semiconductor layers defining a first and a second unipolar photosensitive modules (UPMs) of respectively opposite doping polarities, and a contact layer comprising at least one of a metal material and a semiconductor material having doping polarity opposite to that of the second UPM. The first and second UPMs are respectively adapted for sensing radiation of different respective first and second wavelengths ranges. The second UPM is located upon the first UPM along a certain direction thereby forming a first diode junction between the first and second UPMs. The contact layer is located on the second UPM thereby forming a second diode junction between the second UPM and the contact layer. The first and second diode junctions are configured to have respectively opposite conduction directions, thereby enabling to selectively sense electrical signals associated with the first and second wavelengths ranges.
